User's Manual

SYSTEM DESCRIPTION AND INSTALLATION MANUAL
TCAS 3000 Traffic Alert and Collision Avoidance System
34−43−23
Use or disclosure of information on this page is subject to the restrictions in the proprietary notice of this document.
Page 4−35
15 Dec 2005
Table 4−5. 41−Pin VSI/TRA Interface Descriptions (cont)
Connector Pin
Designation
Functional Description
J1−36 CONFIGURATION STRAP #5 INPUT (NO):
For −86X, −88X, and −89X units, see pin 35.
For −84X units, CS5 is paired with CS6 (pin 37) to program the Altitude Band. The
following apply: O = Open, G = Ground
CS5 CS6
Pin 36 37 Definition
O O Normal −A to +A
G O Above −A to +B
O G Below −B to +A
G G Unrestricted Range
J1−37 CONFIGURATION STRAP #6 INPUT (NO):
For −84X units this pin is paired with CS5 to program the altitude band. See pin 36.
For −86X, −88X, and −89X units, CS6 is used to program the Traffic Filter. If pin 37 is
Open, the VSI/TRA is programmed to NOT display other traffic. If pin 37 is grounded,
other traffic is displayed.
J1−38 CONFIGURATION STRAP #7 INPUT (NO):
This configuration strap is used during factory test to take the VSI/TRA out of flight mode
and into test mode when grounded. This pin must be left unwired, “Open” in all aircraft
installations.
J1−39 DC GROUND INPUT:
To be connected to aircraft dc Ground.
J1−40 115 V ac, 400 HZ POWER INPUT (HI):
This pin, along with its return line (pin 23) supplies power to the VSI/TRA. Connect power
through a 1 Amp circuit breaker.
J1−41 CONFIGURATION STRAP #8 INPUT (NO):
For −88X and −89X units, CS8 is paired with CS3 (pin 17) to program the Filter Time
Constant. The following apply: O = Open, G = Ground
CS8 CS3
Pin 41 17 Definition
O O 5.0 Second Delay
O G 6.4 Second Delay
G O 3.2 Second Delay
G G 1.6 Second Delay